Title

Autumn's bubble experiment

Broad Question

How can I make a bubble?

Specific Question

What effects does temperature have on how long bubbles last?
Variables: Bubble mix, temperature, and time

Independent Variable: Temperature

Dependent Variable: Time

Hypothesis

I think bubbles will last longer when there cold

Graph of Hypothesis

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Experimental Design

I will do my experiment at my house or I’ll try to do it at school. I will be doing my experiment on my own. I will need to do three trials. I feel like I will have enough information to make a reliable conclusion. I’m going to record my data in my spreadsheet, then on the computer. I am also going to take pictures of my experiment.

Materials List

1. Bubble solution
2. Bubble wand
3. Refrigerator
4. Microwave
5. Three containers
6. Thermometer
7. Measuring cup
8. Timer

Detailed Procedure

1. Get three of the same jars.
2. Pour the same amount of bubble solution in each of the jars.
3. Make sure that one of the jars is cold, ones is hot and ones is medium temperature.
4. Select a jar and dip the wand so that the bubble solution covers the end of the wand.
5. Blow on the end of the wand with the bubble solution to release bubbles. Get a timer and see how long it takes until the last bubble pops.
6. Record time in data table.
7. Repeat steps with the other jars.

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Background Research

1. Source: Clark, John. Matter and Materials. Milwaukee, W.I.: Gareth Stevens, 2006. Print.
1. Information: Surface tension is what makes soap bubbles round. The tensions on the inside and outside surfaces.
2. Source: Justine , James. eHow. 1999. Web. 1 Jan. 2012. <http://www.ehow.com/facts_7310857_can-different-temperatures-atmospheric-conditions_.html>.
2. Information: Temperature can play a role in the surface tension of soapy water. Cooling can make a soap bubble last longer. Cooling a bubble to around -80 Celsius (-112 Fahrenheit) will cause it to solidify. Higher temperatures will cause water to evaporate more rapidly, shortening the life of the bubble.

References

http://chemistry.about.com/od/sciencefairproject1/a/bubbletemp.htm
http://en.wikipedia.org/wiki/Soap_bubble
http://www.sciencedaily.com/articles/s/soap_bubble.htm

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Results

The original purpose of this experiment was to see what bubble will last longer in a different temperature. The results of this experiment were that the colder bubbles lasted the longest. The temperature of the cold bubbles was 16 degree Celsius and lasted a average of 11.18.

Data Table

	Duration of bubble life (s)
	Trial 1	Trial 2	Trial 3	Trial 4	Trial 5
Temperature of bubbles
Room Temperature
Hot
Cold

Graphs

Photos

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Data Analysis

Conclusion

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Discussion